EP 1623054 A1 20060208 - METHOD FOR COATING METAL BODIES WITH A PHOSPHATING SOLUTION AND PHOSPHATING SOLUTION
Title (en)
METHOD FOR COATING METAL BODIES WITH A PHOSPHATING SOLUTION AND PHOSPHATING SOLUTION
Title (de)
VERFAHREN ZUM BESCHICHTEN VON METALLISCHEN KÖRPERN MIT EINER PHOSPHATIERUNGSLÖSUNG UND DIE PHOSPHATIERUNGSLÖSUNG
Title (fr)
PROCEDE DE REVETEMENT DE CORPS METALLIQUES AU MOYEN D'UNE SOLUTION DE PHOSPHATATION ET SOLUTION DE PHOSPHATATION
Publication
Application
Priority
- EP 2004004790 W 20040506
- DE 10320313 A 20030506
Abstract (en)
[origin: WO2004099468A1] The invention relates to a method for coating surfaces of metal objects, especially as a pre-treatment for cold deformation or as a pre-treatment for a metal-rubber compound or to adjust friction coefficients in connection elements, used in connection elements such as screws for screwing purposes. The invention is characterised in that the optionally, already pre-coated metal objects are coated with a composition containing an aqueous, acidic phosphate, said composition containing 8 - 50 g/L phosphate as PO4, 0.5 - 30 g/L zinc ions, 0 - 5 g/L manganese ions, 0 - 8 g/L calcium ions, 0 - 5 g/L magnesium ions, whereby at least 0.1 g/L of calcium or/and magnesium ions are provided, 0.1 - 5 g/L nitroguanidine, 0.1 - 8 g/L chlorate or/and peroxide ions and 0 - 16 g/L complex fluoride (MeF4 or/and MeF6) of Me = B, Si, Ti, Hf or/and Zr and 0 - 5 g/L fluoride ions, whereby the total amount of complex fluoride and fluoride ions ranges from 0.1 - 18 g/L. The invention also relates to a phosphating method wherein the ratio of removal by pickling in relation to the layer weight of the phosphate layer is less than 75 % . The invention further relates to a corresponding aqueous phosphating solution.
IPC 1-7
IPC 8 full level
C23C 22/36 (2006.01)
CPC (source: EP US)
C23C 22/368 (2013.01 - EP US)
Citation (search report)
See references of WO 2004099468A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004099468 A1 20041118; DE 10320313 A1 20041202; DE 10320313 B4 20050811; EP 1623054 A1 20060208; JP 2006525424 A 20061109; MX PA05011817 A 20060126; US 2006237099 A1 20061026
DOCDB simple family (application)
EP 2004004790 W 20040506; DE 10320313 A 20030506; EP 04731327 A 20040506; JP 2006505380 A 20040506; MX PA05011817 A 20040506; US 55338204 A 20040506